human orai1 coding sequence Search Results


94
Alomone Labs anti human orai1 rabbit polyclonal antibody
Effect of GA101 on intracellular Ca 2+ concentration in SU-DHL-4 ( A ) and BL2 ( B ) cell lines. Ca 2+ responses to GA101 (10 µg/mL) were measured using Fluo2-Leak Resistant-Acetoxy Methyl ester (Fluo2-LR-AM) Ca 2+ dye and recorded by videomicroscopy (Zeiss LSM 510) using a 25× objective. Black arrows indicate GA101 addition. Each trace represents the response of one cell and data are representative of at least three independent experiments. Data were processed using OriginPro 7.5 (Origin Lab) or GraphPad prism. Cells were recorded in extracellular Hank’s Balanced Salt Solution (HBSS) containing 2 mM Ca 2+ (2Ca) or in Ca 2+ -free HBSS (0Ca). Cells were preincubated with 100 nM thapsigargin (TG) for 45 min and recorded in Ca 2+ -free HBSS (0Ca + TG) or with 10 µM Ned-19 for 1 h and recorded in Ca 2+ -free HBSS (0Ca + Ned19). Calcium responses to GA101 in cells expressing Non Targeting shRNA (sh NT) or sh <t>Orai1</t> were recorded in HBSS containing 2 mM Ca 2+ . Histograms represent areas under curves (AUC) calculated, under various recording conditions, between the application time of GA101 and t = 2000 s; * p < 0.05.
Anti Human Orai1 Rabbit Polyclonal Antibody, supplied by Alomone Labs, used in various techniques. Bioz Stars score: 94/100, based on 1 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more
https://www.bioz.com/product/human+orai1+coding+sequence/Anti-Human+Orai1+(extracellular)+Antibody/pmc06468563-172-0-7
Average 94 stars, based on 1 article reviews
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94
Thermo Fisher gene exp orai1 mm00774349 m1
Effect of GA101 on intracellular Ca 2+ concentration in SU-DHL-4 ( A ) and BL2 ( B ) cell lines. Ca 2+ responses to GA101 (10 µg/mL) were measured using Fluo2-Leak Resistant-Acetoxy Methyl ester (Fluo2-LR-AM) Ca 2+ dye and recorded by videomicroscopy (Zeiss LSM 510) using a 25× objective. Black arrows indicate GA101 addition. Each trace represents the response of one cell and data are representative of at least three independent experiments. Data were processed using OriginPro 7.5 (Origin Lab) or GraphPad prism. Cells were recorded in extracellular Hank’s Balanced Salt Solution (HBSS) containing 2 mM Ca 2+ (2Ca) or in Ca 2+ -free HBSS (0Ca). Cells were preincubated with 100 nM thapsigargin (TG) for 45 min and recorded in Ca 2+ -free HBSS (0Ca + TG) or with 10 µM Ned-19 for 1 h and recorded in Ca 2+ -free HBSS (0Ca + Ned19). Calcium responses to GA101 in cells expressing Non Targeting shRNA (sh NT) or sh <t>Orai1</t> were recorded in HBSS containing 2 mM Ca 2+ . Histograms represent areas under curves (AUC) calculated, under various recording conditions, between the application time of GA101 and t = 2000 s; * p < 0.05.
Gene Exp Orai1 Mm00774349 M1, supplied by Thermo Fisher, used in various techniques. Bioz Stars score: 94/100, based on 1 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more
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93
Addgene inc orai1 egfp
Effect of GA101 on intracellular Ca 2+ concentration in SU-DHL-4 ( A ) and BL2 ( B ) cell lines. Ca 2+ responses to GA101 (10 µg/mL) were measured using Fluo2-Leak Resistant-Acetoxy Methyl ester (Fluo2-LR-AM) Ca 2+ dye and recorded by videomicroscopy (Zeiss LSM 510) using a 25× objective. Black arrows indicate GA101 addition. Each trace represents the response of one cell and data are representative of at least three independent experiments. Data were processed using OriginPro 7.5 (Origin Lab) or GraphPad prism. Cells were recorded in extracellular Hank’s Balanced Salt Solution (HBSS) containing 2 mM Ca 2+ (2Ca) or in Ca 2+ -free HBSS (0Ca). Cells were preincubated with 100 nM thapsigargin (TG) for 45 min and recorded in Ca 2+ -free HBSS (0Ca + TG) or with 10 µM Ned-19 for 1 h and recorded in Ca 2+ -free HBSS (0Ca + Ned19). Calcium responses to GA101 in cells expressing Non Targeting shRNA (sh NT) or sh <t>Orai1</t> were recorded in HBSS containing 2 mM Ca 2+ . Histograms represent areas under curves (AUC) calculated, under various recording conditions, between the application time of GA101 and t = 2000 s; * p < 0.05.
Orai1 Egfp, supplied by Addgene inc, used in various techniques. Bioz Stars score: 93/100, based on 1 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more
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93
Addgene inc human usp21
( a ) Immunoblot of lysates from HEK 293T cells transfected with S-tagged versions of mouse USP18 (mUSP18), mouse USP18 with the active site cysteine replaced by alanine (mUSP18 C61A), human <t>USP21</t> (hUSP21), zebrafish USP18 ( dr USP18) and zebrafish USP18 with the active site cysteine replaced by an alanine ( dr USP18 C38A) or from untransfected cells (control). Protein expression was visualized with an antibody directed against the S tag. ( b ) Immunoblot of lysates from cells transfected with the indicated expression constructs, incubated with the active site–directed probe ISG15-PA. Complex formation was monitored on the basis of a size shift detected with an anti-S-tag antibody. ( c ) Immunoblot analyses of protein lysates from cells transfected with the indicated expression constructs, incubated with the active site–directed probe Ub-PA. Complex formation was monitored on the basis of a size shift detected with an anti-S-tag antibody. USP21 is cross-reactive for ISG15, and ubiquitin served as a positive control for Ub binding. Results shown in a – c are representative of three independent experiments.
Human Usp21, supplied by Addgene inc, used in various techniques. Bioz Stars score: 93/100, based on 1 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more
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85
Addgene inc orai 1 e106d myc gfp
( a ) Immunoblot of lysates from HEK 293T cells transfected with S-tagged versions of mouse USP18 (mUSP18), mouse USP18 with the active site cysteine replaced by alanine (mUSP18 C61A), human <t>USP21</t> (hUSP21), zebrafish USP18 ( dr USP18) and zebrafish USP18 with the active site cysteine replaced by an alanine ( dr USP18 C38A) or from untransfected cells (control). Protein expression was visualized with an antibody directed against the S tag. ( b ) Immunoblot of lysates from cells transfected with the indicated expression constructs, incubated with the active site–directed probe ISG15-PA. Complex formation was monitored on the basis of a size shift detected with an anti-S-tag antibody. ( c ) Immunoblot analyses of protein lysates from cells transfected with the indicated expression constructs, incubated with the active site–directed probe Ub-PA. Complex formation was monitored on the basis of a size shift detected with an anti-S-tag antibody. USP21 is cross-reactive for ISG15, and ubiquitin served as a positive control for Ub binding. Results shown in a – c are representative of three independent experiments.
Orai 1 E106d Myc Gfp, supplied by Addgene inc, used in various techniques. Bioz Stars score: 85/100, based on 1 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more
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94
ProSci Incorporated rabbit polyclonal anti orai1
( a ) Immunoblot of lysates from HEK 293T cells transfected with S-tagged versions of mouse USP18 (mUSP18), mouse USP18 with the active site cysteine replaced by alanine (mUSP18 C61A), human <t>USP21</t> (hUSP21), zebrafish USP18 ( dr USP18) and zebrafish USP18 with the active site cysteine replaced by an alanine ( dr USP18 C38A) or from untransfected cells (control). Protein expression was visualized with an antibody directed against the S tag. ( b ) Immunoblot of lysates from cells transfected with the indicated expression constructs, incubated with the active site–directed probe ISG15-PA. Complex formation was monitored on the basis of a size shift detected with an anti-S-tag antibody. ( c ) Immunoblot analyses of protein lysates from cells transfected with the indicated expression constructs, incubated with the active site–directed probe Ub-PA. Complex formation was monitored on the basis of a size shift detected with an anti-S-tag antibody. USP21 is cross-reactive for ISG15, and ubiquitin served as a positive control for Ub binding. Results shown in a – c are representative of three independent experiments.
Rabbit Polyclonal Anti Orai1, supplied by ProSci Incorporated, used in various techniques. Bioz Stars score: 94/100, based on 1 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more
https://www.bioz.com/product/human+orai1+coding+sequence/ORAI1+Antibody/pmc02777402-176-5-17
Average 94 stars, based on 1 article reviews
rabbit polyclonal anti orai1 - by Bioz Stars, 2026-10
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94
Proteintech anti orai1
( a ) Immunoblot of lysates from HEK 293T cells transfected with S-tagged versions of mouse USP18 (mUSP18), mouse USP18 with the active site cysteine replaced by alanine (mUSP18 C61A), human <t>USP21</t> (hUSP21), zebrafish USP18 ( dr USP18) and zebrafish USP18 with the active site cysteine replaced by an alanine ( dr USP18 C38A) or from untransfected cells (control). Protein expression was visualized with an antibody directed against the S tag. ( b ) Immunoblot of lysates from cells transfected with the indicated expression constructs, incubated with the active site–directed probe ISG15-PA. Complex formation was monitored on the basis of a size shift detected with an anti-S-tag antibody. ( c ) Immunoblot analyses of protein lysates from cells transfected with the indicated expression constructs, incubated with the active site–directed probe Ub-PA. Complex formation was monitored on the basis of a size shift detected with an anti-S-tag antibody. USP21 is cross-reactive for ISG15, and ubiquitin served as a positive control for Ub binding. Results shown in a – c are representative of three independent experiments.
Anti Orai1, supplied by Proteintech, used in various techniques. Bioz Stars score: 94/100, based on 1 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more
https://www.bioz.com/product/human+orai1+coding+sequence/ORAI1+Antibody/pmc06047677-249-62-63
Average 94 stars, based on 1 article reviews
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93
Addgene inc pcdna3 1 orai1 carrying cracm1
Modulation of Ca 2+ in CRAC-manipulated MSCs. The following experiments were conducted at 7 days after gene transfection of wild-type MSCs, pcDNA3.1-Orai1-transfected MSCs (M1-MSCs), and <t>CRACM1-specific</t> gRNA vector and linear EF1a-GFP-P2A-Puro donor-cotransfected MSCs (KOM1-MSCs). (a) PCR amplification of reverse transcription products produced the expected band following genetic modification. Molecular marker (lane 1); CARCM1 expression (523 bp) in MSCs, M1-MSCs, and KOM1-MSCs (lanes 3, 4, and 5, respectively); and GAPDH expression (214 bp) in MSCs, M1-MSCs, and KOM1-MSCs (lanes 7, 8, and 9, respectively) are shown. (b) CRACM1 mRNA expression in MSCs, M1-MSCs, and KOM1-MSCs (a.u. (arbitrary units); ∗ P < 0.05 and ∗∗∗ P < 0.001). Results are expressed as mean ± SEM ( n = 4). (c) The relative expression of CRACM1 to housekeeping GAPDH in MSCs, M1-MSCs, and KOM1-MSCs using quantitative real-time PCR. Relative fold of CRACM1 expression was achieved using the comparative Ct method (2 -ΔΔCt ) ( ∗∗ P < 0.01 and ∗∗∗ P < 0.001). (d) Time sequential patterns of Ca 2+ imaging in single MSCs, M1-MSCs, and KOM1-MSCs. The imaging period was 200 s without stimulation, followed by 500 s after stimulation. After a 200 s baseline measurement, cells were slowly perfused with TG (0.5 μ M) and then perfused with a CaCl 2 solution (2 mM) at the 400 s time point (scale bar: 10 μ m). (e) Typical Ca 2+ influx patterns of MSCs, M1-MSCs, and KOM1-MSCs shown in (c). (f) Maximum increases in fluorescent intensity values of MSCs, M1-MSCs, and KOM1-MSCs. Quantification was performed using images acquired from 100–120 cells of each group ( ∗ P < 0.05). Results are expressed as mean ± SEM. (g) Initial rate of Ca 2+ influx (in the first 15 s after Ca 2+ addition) into MSCs, M1-MSCs, and KOM1-MSCs. Quantification was performed using images acquired from 100–120 cells of each group ( ∗ P < 0.05 and ∗∗ P < 0.01). Results are expressed as mean ± SEM.
Pcdna3 1 Orai1 Carrying Cracm1, supplied by Addgene inc, used in various techniques. Bioz Stars score: 93/100, based on 1 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more
https://www.bioz.com/product/human+orai1+coding+sequence/pcDNA3%2E1+Orai1+(Plasmid+%2321638)/pmc06398003-29-0-9
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90
OriGene cdna encoding orai1
Mitochondrial depolarization inhibits ICRAC following overexpression of STIM1 and <t>Orai1.</t> A, in fura 2-loaded RBL-1 cells co-expressing eYFP-STIM1 and Orai1, readmission of external Ca2+ to cells treated with thapsigargin (Thap) (2 μm) results in Ca2+ influx, and this is inhibited by depolarizing mitochondria with antimycin A (Anti. A) (5 μg/ml) and oligomycin (oligo) (0.5 μg/ml), applied to cells 10 min before thapsigargin. B, rate of Ca2+ entry (measured from experiments as in A) is compared (each bar represents >60 cells). C, large ICRAC in cells co-expressing eYFP-STIM1 and Orai1 is substantially reduced by mitochondrial depolarization, and aggregate data are plotted in D. Pipette solution contained InsP3 + 10 mm EGTA. Number of cells is 11 for STIM1 + Orai1 alone and 9 in the presence of antimycin A and oligomycin. E, images from confocal microscopy showing the distribution of eYFP-STIM1 in cells before (labeled Control) and then after exposure to 2 μm thapsigargin in Ca2+-free solution for the various conditions shown. F, distribution of eYFP-STIM1 and mitochondria (detected with MitoTracker red) are compared. Co-localization is indicated in yellow.
Cdna Encoding Orai1, supplied by OriGene, used in various techniques. Bioz Stars score: 90/100, based on 1 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more
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92
Rockland Immunochemicals anti orai1
Figure 1. <t>ORAI1</t> is S-acylated at cysteine C143. (A) ORAI1 immunoblot of HeLa cells treated with PEG-5k to label S-acylation sites after exposure to NEM to block free thiols and then to hydroxylamine (HA) to break acyl-thioester bonds. (B) Western blot and corresponding autoradiogram of HeLa cells labelled for 2 hr with 3H-palmitic acid with or without HA and immunoprecipitated with anti-ORAI1. (C, D) Western blots and corresponding autoradiograms of HeLa (C) and RPE-1 (D) cells expressing the indicated YFP-tagged ORAI1 mutants labelled with 3H-palmitic acid and
Anti Orai1, supplied by Rockland Immunochemicals, used in various techniques. Bioz Stars score: 92/100, based on 1 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more
https://www.bioz.com/product/human+orai1+coding+sequence/ORAI1+Antibody/10__7554_slash_elife__72051-337-46-50
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93
Santa Cruz Biotechnology orai1
Figure 1. <t>ORAI1</t> is S-acylated at cysteine C143. (A) ORAI1 immunoblot of HeLa cells treated with PEG-5k to label S-acylation sites after exposure to NEM to block free thiols and then to hydroxylamine (HA) to break acyl-thioester bonds. (B) Western blot and corresponding autoradiogram of HeLa cells labelled for 2 hr with 3H-palmitic acid with or without HA and immunoprecipitated with anti-ORAI1. (C, D) Western blots and corresponding autoradiograms of HeLa (C) and RPE-1 (D) cells expressing the indicated YFP-tagged ORAI1 mutants labelled with 3H-palmitic acid and
Orai1, supplied by Santa Cruz Biotechnology, used in various techniques. Bioz Stars score: 93/100, based on 1 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more
https://www.bioz.com/product/human+orai1+coding+sequence/Orai1+Antibody/pm25310348-38-3-15
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94
Novus Biologicals mouse anti orai1
Figure 1. <t>ORAI1</t> is S-acylated at cysteine C143. (A) ORAI1 immunoblot of HeLa cells treated with PEG-5k to label S-acylation sites after exposure to NEM to block free thiols and then to hydroxylamine (HA) to break acyl-thioester bonds. (B) Western blot and corresponding autoradiogram of HeLa cells labelled for 2 hr with 3H-palmitic acid with or without HA and immunoprecipitated with anti-ORAI1. (C, D) Western blots and corresponding autoradiograms of HeLa (C) and RPE-1 (D) cells expressing the indicated YFP-tagged ORAI1 mutants labelled with 3H-palmitic acid and
Mouse Anti Orai1, supplied by Novus Biologicals, used in various techniques. Bioz Stars score: 94/100, based on 1 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more
https://www.bioz.com/product/human+orai1+coding+sequence/Orai1+Antibody+(6D11A11)+%5BmFluor+Violet+450+SE%5D/pmc06037857-117-44-47
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Image Search Results


Effect of GA101 on intracellular Ca 2+ concentration in SU-DHL-4 ( A ) and BL2 ( B ) cell lines. Ca 2+ responses to GA101 (10 µg/mL) were measured using Fluo2-Leak Resistant-Acetoxy Methyl ester (Fluo2-LR-AM) Ca 2+ dye and recorded by videomicroscopy (Zeiss LSM 510) using a 25× objective. Black arrows indicate GA101 addition. Each trace represents the response of one cell and data are representative of at least three independent experiments. Data were processed using OriginPro 7.5 (Origin Lab) or GraphPad prism. Cells were recorded in extracellular Hank’s Balanced Salt Solution (HBSS) containing 2 mM Ca 2+ (2Ca) or in Ca 2+ -free HBSS (0Ca). Cells were preincubated with 100 nM thapsigargin (TG) for 45 min and recorded in Ca 2+ -free HBSS (0Ca + TG) or with 10 µM Ned-19 for 1 h and recorded in Ca 2+ -free HBSS (0Ca + Ned19). Calcium responses to GA101 in cells expressing Non Targeting shRNA (sh NT) or sh Orai1 were recorded in HBSS containing 2 mM Ca 2+ . Histograms represent areas under curves (AUC) calculated, under various recording conditions, between the application time of GA101 and t = 2000 s; * p < 0.05.

Journal: Cancers

Article Title: Role of Calcium Signaling in GA101-Induced Cell Death in Malignant Human B Cells

doi: 10.3390/cancers11030291

Figure Lengend Snippet: Effect of GA101 on intracellular Ca 2+ concentration in SU-DHL-4 ( A ) and BL2 ( B ) cell lines. Ca 2+ responses to GA101 (10 µg/mL) were measured using Fluo2-Leak Resistant-Acetoxy Methyl ester (Fluo2-LR-AM) Ca 2+ dye and recorded by videomicroscopy (Zeiss LSM 510) using a 25× objective. Black arrows indicate GA101 addition. Each trace represents the response of one cell and data are representative of at least three independent experiments. Data were processed using OriginPro 7.5 (Origin Lab) or GraphPad prism. Cells were recorded in extracellular Hank’s Balanced Salt Solution (HBSS) containing 2 mM Ca 2+ (2Ca) or in Ca 2+ -free HBSS (0Ca). Cells were preincubated with 100 nM thapsigargin (TG) for 45 min and recorded in Ca 2+ -free HBSS (0Ca + TG) or with 10 µM Ned-19 for 1 h and recorded in Ca 2+ -free HBSS (0Ca + Ned19). Calcium responses to GA101 in cells expressing Non Targeting shRNA (sh NT) or sh Orai1 were recorded in HBSS containing 2 mM Ca 2+ . Histograms represent areas under curves (AUC) calculated, under various recording conditions, between the application time of GA101 and t = 2000 s; * p < 0.05.

Article Snippet: Anti-human Orai1 rabbit polyclonal antibody was from Alomone Labs (Jerusalem, Israel).

Techniques: Concentration Assay, Expressing, shRNA

Involvement of store-operated Ca 2+ entry (SOCE) in GA101-induced cell death. ( A ) BL2 cells. ( B ) SU-DHL-4 cells. Left panels: Cells were incubated with GA101 in the presence or absence of BTP2 (10 µM) for 24 h. Right panels: Cells expressing sh NT or sh Orai1 were treated with GA101 for 24 h. Cell death was assessed by measuring the loss of mitochondrial membrane potential (Δψm), using tetramethylrhodamine methyl ester (TMRM) as a fluorescent dye, or by caspase 3 activation, measured by the FAM-FLICA in vitro caspase detection kit and both analyzed by flow cytometry; * p < 0.05.

Journal: Cancers

Article Title: Role of Calcium Signaling in GA101-Induced Cell Death in Malignant Human B Cells

doi: 10.3390/cancers11030291

Figure Lengend Snippet: Involvement of store-operated Ca 2+ entry (SOCE) in GA101-induced cell death. ( A ) BL2 cells. ( B ) SU-DHL-4 cells. Left panels: Cells were incubated with GA101 in the presence or absence of BTP2 (10 µM) for 24 h. Right panels: Cells expressing sh NT or sh Orai1 were treated with GA101 for 24 h. Cell death was assessed by measuring the loss of mitochondrial membrane potential (Δψm), using tetramethylrhodamine methyl ester (TMRM) as a fluorescent dye, or by caspase 3 activation, measured by the FAM-FLICA in vitro caspase detection kit and both analyzed by flow cytometry; * p < 0.05.

Article Snippet: Anti-human Orai1 rabbit polyclonal antibody was from Alomone Labs (Jerusalem, Israel).

Techniques: Incubation, Expressing, Activation Assay, In Vitro, Flow Cytometry

Differential activation of endoplasmic reticulum (ER) stress in SU-DHL-4 and BL2 cell lines. ( A ) Cells expressing sh NT or sh Orai1 were treated with GA101 (1 µg/mL) for varying lengths of time. After lysis, phosphorylated eukaryotic translation initiation factor alpha (P-eIF2α), eIF2α, and BIM expression levels were assessed by immunoblot analysis. GAPDH was used as a loading control. ( B ) Quantification of Western blots is given as means ± SE of three to five independent experiments; * p < 0.05.

Journal: Cancers

Article Title: Role of Calcium Signaling in GA101-Induced Cell Death in Malignant Human B Cells

doi: 10.3390/cancers11030291

Figure Lengend Snippet: Differential activation of endoplasmic reticulum (ER) stress in SU-DHL-4 and BL2 cell lines. ( A ) Cells expressing sh NT or sh Orai1 were treated with GA101 (1 µg/mL) for varying lengths of time. After lysis, phosphorylated eukaryotic translation initiation factor alpha (P-eIF2α), eIF2α, and BIM expression levels were assessed by immunoblot analysis. GAPDH was used as a loading control. ( B ) Quantification of Western blots is given as means ± SE of three to five independent experiments; * p < 0.05.

Article Snippet: Anti-human Orai1 rabbit polyclonal antibody was from Alomone Labs (Jerusalem, Israel).

Techniques: Activation Assay, Expressing, Lysis, Western Blot

( a ) Immunoblot of lysates from HEK 293T cells transfected with S-tagged versions of mouse USP18 (mUSP18), mouse USP18 with the active site cysteine replaced by alanine (mUSP18 C61A), human USP21 (hUSP21), zebrafish USP18 ( dr USP18) and zebrafish USP18 with the active site cysteine replaced by an alanine ( dr USP18 C38A) or from untransfected cells (control). Protein expression was visualized with an antibody directed against the S tag. ( b ) Immunoblot of lysates from cells transfected with the indicated expression constructs, incubated with the active site–directed probe ISG15-PA. Complex formation was monitored on the basis of a size shift detected with an anti-S-tag antibody. ( c ) Immunoblot analyses of protein lysates from cells transfected with the indicated expression constructs, incubated with the active site–directed probe Ub-PA. Complex formation was monitored on the basis of a size shift detected with an anti-S-tag antibody. USP21 is cross-reactive for ISG15, and ubiquitin served as a positive control for Ub binding. Results shown in a – c are representative of three independent experiments.

Journal: Nature Structural & Molecular Biology

Article Title: Structural basis of the specificity of USP18 toward ISG15

doi: 10.1038/nsmb.3371

Figure Lengend Snippet: ( a ) Immunoblot of lysates from HEK 293T cells transfected with S-tagged versions of mouse USP18 (mUSP18), mouse USP18 with the active site cysteine replaced by alanine (mUSP18 C61A), human USP21 (hUSP21), zebrafish USP18 ( dr USP18) and zebrafish USP18 with the active site cysteine replaced by an alanine ( dr USP18 C38A) or from untransfected cells (control). Protein expression was visualized with an antibody directed against the S tag. ( b ) Immunoblot of lysates from cells transfected with the indicated expression constructs, incubated with the active site–directed probe ISG15-PA. Complex formation was monitored on the basis of a size shift detected with an anti-S-tag antibody. ( c ) Immunoblot analyses of protein lysates from cells transfected with the indicated expression constructs, incubated with the active site–directed probe Ub-PA. Complex formation was monitored on the basis of a size shift detected with an anti-S-tag antibody. USP21 is cross-reactive for ISG15, and ubiquitin served as a positive control for Ub binding. Results shown in a – c are representative of three independent experiments.

Article Snippet: The vector pTriEx2-USP21cd encoding residues 197–565 of human USP21 was generated by amplification of USP21 cDNA from the vector Flag-HA-USP21 (Addgene) with the primers KpnI-USP21cd-for and XhoI-USP21cd-rev.

Techniques: Western Blot, Transfection, Expressing, Construct, Incubation, Positive Control, Binding Assay

Modulation of Ca 2+ in CRAC-manipulated MSCs. The following experiments were conducted at 7 days after gene transfection of wild-type MSCs, pcDNA3.1-Orai1-transfected MSCs (M1-MSCs), and CRACM1-specific gRNA vector and linear EF1a-GFP-P2A-Puro donor-cotransfected MSCs (KOM1-MSCs). (a) PCR amplification of reverse transcription products produced the expected band following genetic modification. Molecular marker (lane 1); CARCM1 expression (523 bp) in MSCs, M1-MSCs, and KOM1-MSCs (lanes 3, 4, and 5, respectively); and GAPDH expression (214 bp) in MSCs, M1-MSCs, and KOM1-MSCs (lanes 7, 8, and 9, respectively) are shown. (b) CRACM1 mRNA expression in MSCs, M1-MSCs, and KOM1-MSCs (a.u. (arbitrary units); ∗ P < 0.05 and ∗∗∗ P < 0.001). Results are expressed as mean ± SEM ( n = 4). (c) The relative expression of CRACM1 to housekeeping GAPDH in MSCs, M1-MSCs, and KOM1-MSCs using quantitative real-time PCR. Relative fold of CRACM1 expression was achieved using the comparative Ct method (2 -ΔΔCt ) ( ∗∗ P < 0.01 and ∗∗∗ P < 0.001). (d) Time sequential patterns of Ca 2+ imaging in single MSCs, M1-MSCs, and KOM1-MSCs. The imaging period was 200 s without stimulation, followed by 500 s after stimulation. After a 200 s baseline measurement, cells were slowly perfused with TG (0.5 μ M) and then perfused with a CaCl 2 solution (2 mM) at the 400 s time point (scale bar: 10 μ m). (e) Typical Ca 2+ influx patterns of MSCs, M1-MSCs, and KOM1-MSCs shown in (c). (f) Maximum increases in fluorescent intensity values of MSCs, M1-MSCs, and KOM1-MSCs. Quantification was performed using images acquired from 100–120 cells of each group ( ∗ P < 0.05). Results are expressed as mean ± SEM. (g) Initial rate of Ca 2+ influx (in the first 15 s after Ca 2+ addition) into MSCs, M1-MSCs, and KOM1-MSCs. Quantification was performed using images acquired from 100–120 cells of each group ( ∗ P < 0.05 and ∗∗ P < 0.01). Results are expressed as mean ± SEM.

Journal: Journal of Immunology Research

Article Title: Genetic Manipulation of Calcium Release-Activated Calcium Channel 1 Modulates the Multipotency of Human Cartilage-Derived Mesenchymal Stem Cells

doi: 10.1155/2019/7510214

Figure Lengend Snippet: Modulation of Ca 2+ in CRAC-manipulated MSCs. The following experiments were conducted at 7 days after gene transfection of wild-type MSCs, pcDNA3.1-Orai1-transfected MSCs (M1-MSCs), and CRACM1-specific gRNA vector and linear EF1a-GFP-P2A-Puro donor-cotransfected MSCs (KOM1-MSCs). (a) PCR amplification of reverse transcription products produced the expected band following genetic modification. Molecular marker (lane 1); CARCM1 expression (523 bp) in MSCs, M1-MSCs, and KOM1-MSCs (lanes 3, 4, and 5, respectively); and GAPDH expression (214 bp) in MSCs, M1-MSCs, and KOM1-MSCs (lanes 7, 8, and 9, respectively) are shown. (b) CRACM1 mRNA expression in MSCs, M1-MSCs, and KOM1-MSCs (a.u. (arbitrary units); ∗ P < 0.05 and ∗∗∗ P < 0.001). Results are expressed as mean ± SEM ( n = 4). (c) The relative expression of CRACM1 to housekeeping GAPDH in MSCs, M1-MSCs, and KOM1-MSCs using quantitative real-time PCR. Relative fold of CRACM1 expression was achieved using the comparative Ct method (2 -ΔΔCt ) ( ∗∗ P < 0.01 and ∗∗∗ P < 0.001). (d) Time sequential patterns of Ca 2+ imaging in single MSCs, M1-MSCs, and KOM1-MSCs. The imaging period was 200 s without stimulation, followed by 500 s after stimulation. After a 200 s baseline measurement, cells were slowly perfused with TG (0.5 μ M) and then perfused with a CaCl 2 solution (2 mM) at the 400 s time point (scale bar: 10 μ m). (e) Typical Ca 2+ influx patterns of MSCs, M1-MSCs, and KOM1-MSCs shown in (c). (f) Maximum increases in fluorescent intensity values of MSCs, M1-MSCs, and KOM1-MSCs. Quantification was performed using images acquired from 100–120 cells of each group ( ∗ P < 0.05). Results are expressed as mean ± SEM. (g) Initial rate of Ca 2+ influx (in the first 15 s after Ca 2+ addition) into MSCs, M1-MSCs, and KOM1-MSCs. Quantification was performed using images acquired from 100–120 cells of each group ( ∗ P < 0.05 and ∗∗ P < 0.01). Results are expressed as mean ± SEM.

Article Snippet: PcDNA3.1-Orai1 carrying CRACM1 was a gift from Anjana Rao (Addgene plasmid # 21638) [ ], which was transfected into MSCs using Lipofectamine® 3000 Reagent (Thermo Fisher Scientific K.K., Tokyo, Japan), according to the manufacturer's instructions.

Techniques: Transfection, Plasmid Preparation, Amplification, Reverse Transcription, Produced, Modification, Marker, Expressing, Real-time Polymerase Chain Reaction, Imaging

Overexpression of CRACM1 inhibits MSC differentiation to adipocytes. MSCs, M1-MSCs, and KOM1-MSCs were cultured in adipogenic differentiation medium for 7 days. Cells were then stained for mFABP (red) as a marker of adipocytes and counterstained with Hoechst® 33342 for nuclear staining (blue). (a) Typical images of MSCs, M1-MSCs, and KOM1-MSCs observed by fluorescence microscopy (×200; scale bar: 50 μ m). (b) Typical imaging screening panel for quantification of mFABP4 expression. MSCs, M1-MSCs, and KOM1-MSCs were seeded on 8-well plates, and 32 fields were captured in each well using a high-throughput image quantitation system. One of 32 fields is shown. Well number and average intensity are indicated on the image. (c) FABP expression in MSCs, M1-MSCs, and KOM1-MSCs. The average fluorescent intensity was obtained from 256 images for each group ( ∗ P < 0.05). Results are expressed as mean ± SEM. (d) Typical images of lipid droplets analysis. Lipid droplets, which were stained using Oil Red O, present as bright refractive round structures. (×400; scale bar: 25 μ m). (e) Relative positive area of lipid droplet analysis. The red-stained area was segmented from the background, and the relative positive area was quantified. More than four fields per section and an average of five sections from each sample were used for semiquantitative analysis ( ∗∗∗ P < 0.001). Results are expressed as mean ± SEM.

Journal: Journal of Immunology Research

Article Title: Genetic Manipulation of Calcium Release-Activated Calcium Channel 1 Modulates the Multipotency of Human Cartilage-Derived Mesenchymal Stem Cells

doi: 10.1155/2019/7510214

Figure Lengend Snippet: Overexpression of CRACM1 inhibits MSC differentiation to adipocytes. MSCs, M1-MSCs, and KOM1-MSCs were cultured in adipogenic differentiation medium for 7 days. Cells were then stained for mFABP (red) as a marker of adipocytes and counterstained with Hoechst® 33342 for nuclear staining (blue). (a) Typical images of MSCs, M1-MSCs, and KOM1-MSCs observed by fluorescence microscopy (×200; scale bar: 50 μ m). (b) Typical imaging screening panel for quantification of mFABP4 expression. MSCs, M1-MSCs, and KOM1-MSCs were seeded on 8-well plates, and 32 fields were captured in each well using a high-throughput image quantitation system. One of 32 fields is shown. Well number and average intensity are indicated on the image. (c) FABP expression in MSCs, M1-MSCs, and KOM1-MSCs. The average fluorescent intensity was obtained from 256 images for each group ( ∗ P < 0.05). Results are expressed as mean ± SEM. (d) Typical images of lipid droplets analysis. Lipid droplets, which were stained using Oil Red O, present as bright refractive round structures. (×400; scale bar: 25 μ m). (e) Relative positive area of lipid droplet analysis. The red-stained area was segmented from the background, and the relative positive area was quantified. More than four fields per section and an average of five sections from each sample were used for semiquantitative analysis ( ∗∗∗ P < 0.001). Results are expressed as mean ± SEM.

Article Snippet: PcDNA3.1-Orai1 carrying CRACM1 was a gift from Anjana Rao (Addgene plasmid # 21638) [ ], which was transfected into MSCs using Lipofectamine® 3000 Reagent (Thermo Fisher Scientific K.K., Tokyo, Japan), according to the manufacturer's instructions.

Techniques: Over Expression, Cell Culture, Staining, Marker, Fluorescence, Microscopy, Imaging, Expressing, High Throughput Screening Assay, Quantitation Assay

Mitochondrial depolarization inhibits ICRAC following overexpression of STIM1 and Orai1. A, in fura 2-loaded RBL-1 cells co-expressing eYFP-STIM1 and Orai1, readmission of external Ca2+ to cells treated with thapsigargin (Thap) (2 μm) results in Ca2+ influx, and this is inhibited by depolarizing mitochondria with antimycin A (Anti. A) (5 μg/ml) and oligomycin (oligo) (0.5 μg/ml), applied to cells 10 min before thapsigargin. B, rate of Ca2+ entry (measured from experiments as in A) is compared (each bar represents >60 cells). C, large ICRAC in cells co-expressing eYFP-STIM1 and Orai1 is substantially reduced by mitochondrial depolarization, and aggregate data are plotted in D. Pipette solution contained InsP3 + 10 mm EGTA. Number of cells is 11 for STIM1 + Orai1 alone and 9 in the presence of antimycin A and oligomycin. E, images from confocal microscopy showing the distribution of eYFP-STIM1 in cells before (labeled Control) and then after exposure to 2 μm thapsigargin in Ca2+-free solution for the various conditions shown. F, distribution of eYFP-STIM1 and mitochondria (detected with MitoTracker red) are compared. Co-localization is indicated in yellow.

Journal: The Journal of Biological Chemistry

Article Title: Mitofusin 2 Regulates STIM1 Migration from the Ca 2+ Store to the Plasma Membrane in Cells with Depolarized Mitochondria *

doi: 10.1074/jbc.M110.174029

Figure Lengend Snippet: Mitochondrial depolarization inhibits ICRAC following overexpression of STIM1 and Orai1. A, in fura 2-loaded RBL-1 cells co-expressing eYFP-STIM1 and Orai1, readmission of external Ca2+ to cells treated with thapsigargin (Thap) (2 μm) results in Ca2+ influx, and this is inhibited by depolarizing mitochondria with antimycin A (Anti. A) (5 μg/ml) and oligomycin (oligo) (0.5 μg/ml), applied to cells 10 min before thapsigargin. B, rate of Ca2+ entry (measured from experiments as in A) is compared (each bar represents >60 cells). C, large ICRAC in cells co-expressing eYFP-STIM1 and Orai1 is substantially reduced by mitochondrial depolarization, and aggregate data are plotted in D. Pipette solution contained InsP3 + 10 mm EGTA. Number of cells is 11 for STIM1 + Orai1 alone and 9 in the presence of antimycin A and oligomycin. E, images from confocal microscopy showing the distribution of eYFP-STIM1 in cells before (labeled Control) and then after exposure to 2 μm thapsigargin in Ca2+-free solution for the various conditions shown. F, distribution of eYFP-STIM1 and mitochondria (detected with MitoTracker red) are compared. Co-localization is indicated in yellow.

Article Snippet: HEK293 cells were co-transfected with cDNA encoding Orai1 (OriGene) and eYFP-STIM1 (gift from Dr. T. Meyer) using two independent methods, the Lipofectamine and Amaxa systems, as described previously ( 39 ). eYFP-mutant STIM1 was a gift from Dr. J. Putney.

Techniques: Over Expression, Expressing, Transferring, Confocal Microscopy, Labeling, Control

STIM1 migration does not depend on mitochondrial Ca2+ buffering or ATP production. A, loading cells with BAPTA impaired the cytoplasmic Ca2+ rise evoked by thapsigargin. Cells were loaded with either fura 2-AM and 0.1% DMSO (control) or fura 2-AM and BAPTA-AM (10 μm) prior to stimulation with thapsigargin. B, confocal images from a nontreated cell showing eYFP-STIM1 distribution at rest and then following stimulation with thapsigargin in the absence and then presence of antimycin A (Anti) and oligomycin (oligo). Images represent different cells. C, loading cells with BAPTA does not impair migration of eYFP-STIM1 to the cell periphery, but mitochondrial depolarization still reduces translocation in BAPTA-loaded cells. D, time course of Na+ current through CRAC channels in whole-cell patch clamp recording from cells overexpressing Orai1 and eYFP-STIM1. Filled circles denote a control cell and open circles denote a cell after exposure to antimycin A and oligomycin. E, corresponding current-voltage relationships from D are shown, taken when the currents had peaked. F, aggregate data from six control cells and five antimycin A/oligomycin-treated cells are compared. Amplitude was measured at −80 mV. G, mitochondrial depolarization (labeled +Anti./oligo) does not affect intracellular Mg-ATP levels (measured through Mg2+ concentration) provided glycolysis is intact. 2-DOX denotes 10 mm 2-deoxyglucose. H, time course of decay of the Ca2+ signal to thapsigargin is unaffected by mitochondrial depolarization. This time course represents Ca2+ removal by the ATP-dependent plasma membrane Ca2+ pump. I, aggregate data from several experiments as in H are summarized (control denotes 76 cells and Anti./oligo 85 cells).

Journal: The Journal of Biological Chemistry

Article Title: Mitofusin 2 Regulates STIM1 Migration from the Ca 2+ Store to the Plasma Membrane in Cells with Depolarized Mitochondria *

doi: 10.1074/jbc.M110.174029

Figure Lengend Snippet: STIM1 migration does not depend on mitochondrial Ca2+ buffering or ATP production. A, loading cells with BAPTA impaired the cytoplasmic Ca2+ rise evoked by thapsigargin. Cells were loaded with either fura 2-AM and 0.1% DMSO (control) or fura 2-AM and BAPTA-AM (10 μm) prior to stimulation with thapsigargin. B, confocal images from a nontreated cell showing eYFP-STIM1 distribution at rest and then following stimulation with thapsigargin in the absence and then presence of antimycin A (Anti) and oligomycin (oligo). Images represent different cells. C, loading cells with BAPTA does not impair migration of eYFP-STIM1 to the cell periphery, but mitochondrial depolarization still reduces translocation in BAPTA-loaded cells. D, time course of Na+ current through CRAC channels in whole-cell patch clamp recording from cells overexpressing Orai1 and eYFP-STIM1. Filled circles denote a control cell and open circles denote a cell after exposure to antimycin A and oligomycin. E, corresponding current-voltage relationships from D are shown, taken when the currents had peaked. F, aggregate data from six control cells and five antimycin A/oligomycin-treated cells are compared. Amplitude was measured at −80 mV. G, mitochondrial depolarization (labeled +Anti./oligo) does not affect intracellular Mg-ATP levels (measured through Mg2+ concentration) provided glycolysis is intact. 2-DOX denotes 10 mm 2-deoxyglucose. H, time course of decay of the Ca2+ signal to thapsigargin is unaffected by mitochondrial depolarization. This time course represents Ca2+ removal by the ATP-dependent plasma membrane Ca2+ pump. I, aggregate data from several experiments as in H are summarized (control denotes 76 cells and Anti./oligo 85 cells).

Article Snippet: HEK293 cells were co-transfected with cDNA encoding Orai1 (OriGene) and eYFP-STIM1 (gift from Dr. T. Meyer) using two independent methods, the Lipofectamine and Amaxa systems, as described previously ( 39 ). eYFP-mutant STIM1 was a gift from Dr. J. Putney.

Techniques: Migration, Control, Translocation Assay, Patch Clamp, Labeling, Concentration Assay, Clinical Proteomics, Membrane

Store-operated Ca2+ entry can be partially rescued by overexpressing STIM1 in HEK293 cells with depolarized mitochondria. A–C, HEK293 cells were stimulated with thapsigargin in Ca2+-free solution (at t = 0) and then 2 mm external Ca2+ was readmitted as shown. Only the Ca2+ entry component is shown for simplicity. The extent of Ca2+ release was similar for the different conditions. A, store-operated entry in wild type cells is inhibited by antimycin A and oligomycin. B, overexpression of eYFP-STIM1 results in modest recovery of store-operated Ca2+ entry in cells with depolarized mitochondria. C, overexpression of eYFP-STIM1 and Orai1 results in substantial rescue of store-operated Ca2+ entry in the presence of antimycin A and oligomycin. For each graph, the response in antimycin A and oligomycin has been normalized to the corresponding control response. Control response has been re-calculated as ((R − R0)/Rpeak)·100%, where R is the measured ratio (356/380) at any time point following Ca2+ readmission; Rpeak is the peak ratio measured in the cell (maximal response); and R0 is the basal ratio (resting Ca2+). D, Ca2+ influx following overexpression of Orai1 and STIM1 is compared before and after mitochondrial depolarization in cells loaded with fura 5F. E–H, TIRF images comparing puncta formation in a resting HEK cell shown in (E), and then after store depletion with thapsigargin (Thap) for 4 min (F) and after store depletion following exposure to antimycin A (Anti) and oligomycin (oligo) for 15 min (G). H, histograms plot the absolute fluorescence intensity measured in 1-μm2 segments against the frequency of occurrence. Upper panel represents cells exposed to thapsigargin, and the lower panel analyses cells pre-exposed to antimycin A and oligomycin prior to thapsigargin challenge.

Journal: The Journal of Biological Chemistry

Article Title: Mitofusin 2 Regulates STIM1 Migration from the Ca 2+ Store to the Plasma Membrane in Cells with Depolarized Mitochondria *

doi: 10.1074/jbc.M110.174029

Figure Lengend Snippet: Store-operated Ca2+ entry can be partially rescued by overexpressing STIM1 in HEK293 cells with depolarized mitochondria. A–C, HEK293 cells were stimulated with thapsigargin in Ca2+-free solution (at t = 0) and then 2 mm external Ca2+ was readmitted as shown. Only the Ca2+ entry component is shown for simplicity. The extent of Ca2+ release was similar for the different conditions. A, store-operated entry in wild type cells is inhibited by antimycin A and oligomycin. B, overexpression of eYFP-STIM1 results in modest recovery of store-operated Ca2+ entry in cells with depolarized mitochondria. C, overexpression of eYFP-STIM1 and Orai1 results in substantial rescue of store-operated Ca2+ entry in the presence of antimycin A and oligomycin. For each graph, the response in antimycin A and oligomycin has been normalized to the corresponding control response. Control response has been re-calculated as ((R − R0)/Rpeak)·100%, where R is the measured ratio (356/380) at any time point following Ca2+ readmission; Rpeak is the peak ratio measured in the cell (maximal response); and R0 is the basal ratio (resting Ca2+). D, Ca2+ influx following overexpression of Orai1 and STIM1 is compared before and after mitochondrial depolarization in cells loaded with fura 5F. E–H, TIRF images comparing puncta formation in a resting HEK cell shown in (E), and then after store depletion with thapsigargin (Thap) for 4 min (F) and after store depletion following exposure to antimycin A (Anti) and oligomycin (oligo) for 15 min (G). H, histograms plot the absolute fluorescence intensity measured in 1-μm2 segments against the frequency of occurrence. Upper panel represents cells exposed to thapsigargin, and the lower panel analyses cells pre-exposed to antimycin A and oligomycin prior to thapsigargin challenge.

Article Snippet: HEK293 cells were co-transfected with cDNA encoding Orai1 (OriGene) and eYFP-STIM1 (gift from Dr. T. Meyer) using two independent methods, the Lipofectamine and Amaxa systems, as described previously ( 39 ). eYFP-mutant STIM1 was a gift from Dr. J. Putney.

Techniques: Over Expression, Control, Fluorescence

Figure 1. ORAI1 is S-acylated at cysteine C143. (A) ORAI1 immunoblot of HeLa cells treated with PEG-5k to label S-acylation sites after exposure to NEM to block free thiols and then to hydroxylamine (HA) to break acyl-thioester bonds. (B) Western blot and corresponding autoradiogram of HeLa cells labelled for 2 hr with 3H-palmitic acid with or without HA and immunoprecipitated with anti-ORAI1. (C, D) Western blots and corresponding autoradiograms of HeLa (C) and RPE-1 (D) cells expressing the indicated YFP-tagged ORAI1 mutants labelled with 3H-palmitic acid and

Journal: eLife

Article Title: S-acylation by ZDHHC20 targets ORAI1 channels to lipid rafts for efficient Ca2+ signaling by Jurkat T cell receptors at the immune synapse

doi: 10.7554/elife.72051

Figure Lengend Snippet: Figure 1. ORAI1 is S-acylated at cysteine C143. (A) ORAI1 immunoblot of HeLa cells treated with PEG-5k to label S-acylation sites after exposure to NEM to block free thiols and then to hydroxylamine (HA) to break acyl-thioester bonds. (B) Western blot and corresponding autoradiogram of HeLa cells labelled for 2 hr with 3H-palmitic acid with or without HA and immunoprecipitated with anti-ORAI1. (C, D) Western blots and corresponding autoradiograms of HeLa (C) and RPE-1 (D) cells expressing the indicated YFP-tagged ORAI1 mutants labelled with 3H-palmitic acid and

Article Snippet: For protein detection either on western blot or immunofluorescence, we used; NFATc1 (clone 7A6, MABS409, Sigma), TCR alpha/beta- PE (12- 9986- 42, eBioscience), AntiCholera Toxin, B- Subunit (227040, Sigma), Myc- Tag (9B11) (2276, Cell- Signalling), gamma Tubulin (4D11) (MA1- 850, Thermofisher), ANTI- FLAG M2 (F1804, Sigma), anti- ORAI1 (600–401- DG9, rockland immunochemicals Inc), anti- GFP (SAB4301138, Sigma), anti- mouse- HRP, and rabbit- HRP (1706516 and 172101, Bio- Rad (USA).

Techniques: Western Blot, Blocking Assay, Immunoprecipitation, Expressing

Figure 3. Preventing ORAI1 S-acylation reduces channel clustering and affinity for lipid rafts. (A) Cartoon of the YFP-HA-ORAI WT or C143A constructs with HA exposed extracellularly between TM3 and TM4. HEK-293 cells transiently expressing the indicated constructs were stained for HA in non- permeabilising conditions to decorate the ORAI1 PM fraction. Graph bars represent the mean ± SEM of 15 (WT), 17 (C143A) and 10 (WT+ NP-40) cells. Right, Representative confocal images of YFP (green) and HA (red) staining in the indicated conditions. Scale bar = 25 µm. (B) Representative

Journal: eLife

Article Title: S-acylation by ZDHHC20 targets ORAI1 channels to lipid rafts for efficient Ca2+ signaling by Jurkat T cell receptors at the immune synapse

doi: 10.7554/elife.72051

Figure Lengend Snippet: Figure 3. Preventing ORAI1 S-acylation reduces channel clustering and affinity for lipid rafts. (A) Cartoon of the YFP-HA-ORAI WT or C143A constructs with HA exposed extracellularly between TM3 and TM4. HEK-293 cells transiently expressing the indicated constructs were stained for HA in non- permeabilising conditions to decorate the ORAI1 PM fraction. Graph bars represent the mean ± SEM of 15 (WT), 17 (C143A) and 10 (WT+ NP-40) cells. Right, Representative confocal images of YFP (green) and HA (red) staining in the indicated conditions. Scale bar = 25 µm. (B) Representative

Article Snippet: For protein detection either on western blot or immunofluorescence, we used; NFATc1 (clone 7A6, MABS409, Sigma), TCR alpha/beta- PE (12- 9986- 42, eBioscience), AntiCholera Toxin, B- Subunit (227040, Sigma), Myc- Tag (9B11) (2276, Cell- Signalling), gamma Tubulin (4D11) (MA1- 850, Thermofisher), ANTI- FLAG M2 (F1804, Sigma), anti- ORAI1 (600–401- DG9, rockland immunochemicals Inc), anti- GFP (SAB4301138, Sigma), anti- mouse- HRP, and rabbit- HRP (1706516 and 172101, Bio- Rad (USA).

Techniques: Construct, Expressing, Staining

Figure 4. PAT20 S-acylates ORAI1 and modulates its activity. (A) Western blot and matching autoradiogram of RPE-1 cells expressing ORAI1-YFP plus the indicated PAT isoform, labelled with 3H-palmitic acid and immunoprecipitated with anti-GFP. Graph bar (right) shows densitometry analysis of the tritiated bands relative to GFP in RPE1 (Blue, N = 2) and HeLa cells (yellow, N = 1). (B) Functional effect of PAT3, 7, and 20 expression. Representative western blot of HeLa cells expressing Myc-tagged PAT isoforms (left), averaged SOCE responses (middle), and peak amplitude (right). Data are mean

Journal: eLife

Article Title: S-acylation by ZDHHC20 targets ORAI1 channels to lipid rafts for efficient Ca2+ signaling by Jurkat T cell receptors at the immune synapse

doi: 10.7554/elife.72051

Figure Lengend Snippet: Figure 4. PAT20 S-acylates ORAI1 and modulates its activity. (A) Western blot and matching autoradiogram of RPE-1 cells expressing ORAI1-YFP plus the indicated PAT isoform, labelled with 3H-palmitic acid and immunoprecipitated with anti-GFP. Graph bar (right) shows densitometry analysis of the tritiated bands relative to GFP in RPE1 (Blue, N = 2) and HeLa cells (yellow, N = 1). (B) Functional effect of PAT3, 7, and 20 expression. Representative western blot of HeLa cells expressing Myc-tagged PAT isoforms (left), averaged SOCE responses (middle), and peak amplitude (right). Data are mean

Article Snippet: For protein detection either on western blot or immunofluorescence, we used; NFATc1 (clone 7A6, MABS409, Sigma), TCR alpha/beta- PE (12- 9986- 42, eBioscience), AntiCholera Toxin, B- Subunit (227040, Sigma), Myc- Tag (9B11) (2276, Cell- Signalling), gamma Tubulin (4D11) (MA1- 850, Thermofisher), ANTI- FLAG M2 (F1804, Sigma), anti- ORAI1 (600–401- DG9, rockland immunochemicals Inc), anti- GFP (SAB4301138, Sigma), anti- mouse- HRP, and rabbit- HRP (1706516 and 172101, Bio- Rad (USA).

Techniques: Activity Assay, Western Blot, Expressing, Immunoprecipitation, Functional Assay

Figure 5. ORAI1 S-acylation promotes Jurkat T cell activation. (A) Averaged fura-2 responses, their peak amplitude (middle graph bar) and slope (right graph bar) evoked by Ca2+ re-addition in Tg treated (1 µM, 8 min) Jurkat cells lines generated by CRISPR with control or ORAI1-targeted guiding sequences and stably re-expressing either WT or C143A ORAI1-YFP. Data are mean ± SEM of 210 (Control), 242 (KO), 189 (WT), and 203 (C143A) cells from three independent experiments (B) Western blot showing the amount of biotinylated GFP immunoreactivity in the PM in Jurkat CRISPR ORAI1

Journal: eLife

Article Title: S-acylation by ZDHHC20 targets ORAI1 channels to lipid rafts for efficient Ca2+ signaling by Jurkat T cell receptors at the immune synapse

doi: 10.7554/elife.72051

Figure Lengend Snippet: Figure 5. ORAI1 S-acylation promotes Jurkat T cell activation. (A) Averaged fura-2 responses, their peak amplitude (middle graph bar) and slope (right graph bar) evoked by Ca2+ re-addition in Tg treated (1 µM, 8 min) Jurkat cells lines generated by CRISPR with control or ORAI1-targeted guiding sequences and stably re-expressing either WT or C143A ORAI1-YFP. Data are mean ± SEM of 210 (Control), 242 (KO), 189 (WT), and 203 (C143A) cells from three independent experiments (B) Western blot showing the amount of biotinylated GFP immunoreactivity in the PM in Jurkat CRISPR ORAI1

Article Snippet: For protein detection either on western blot or immunofluorescence, we used; NFATc1 (clone 7A6, MABS409, Sigma), TCR alpha/beta- PE (12- 9986- 42, eBioscience), AntiCholera Toxin, B- Subunit (227040, Sigma), Myc- Tag (9B11) (2276, Cell- Signalling), gamma Tubulin (4D11) (MA1- 850, Thermofisher), ANTI- FLAG M2 (F1804, Sigma), anti- ORAI1 (600–401- DG9, rockland immunochemicals Inc), anti- GFP (SAB4301138, Sigma), anti- mouse- HRP, and rabbit- HRP (1706516 and 172101, Bio- Rad (USA).

Techniques: Activation Assay, Generated, CRISPR, Control, Stable Transfection, Expressing, Western Blot

Figure 6. ORAI1 S-acylation regulates TCR enrichment and signaling at the immune synapse. (A) Conditions used to study synapse formation between Raji and Jurkat T cells. Raji are pulsed with SEE prior to co-culture with Jurkat cells, IS formation evaluated in living (25 min) and fixed cells (1 H) and Jurkat activation at 24 hr. (B) Relative changes in NFAT-Luciferase vs. housekeeping- Renilla luminescence evoked by coculture of the indicated cell lines for 24 hr with naïve or SEE (1 µg/ml) pulsed Raji. Data are mean ± SEM of 15–20 biological replicates in cells from four independent experiments.

Journal: eLife

Article Title: S-acylation by ZDHHC20 targets ORAI1 channels to lipid rafts for efficient Ca2+ signaling by Jurkat T cell receptors at the immune synapse

doi: 10.7554/elife.72051

Figure Lengend Snippet: Figure 6. ORAI1 S-acylation regulates TCR enrichment and signaling at the immune synapse. (A) Conditions used to study synapse formation between Raji and Jurkat T cells. Raji are pulsed with SEE prior to co-culture with Jurkat cells, IS formation evaluated in living (25 min) and fixed cells (1 H) and Jurkat activation at 24 hr. (B) Relative changes in NFAT-Luciferase vs. housekeeping- Renilla luminescence evoked by coculture of the indicated cell lines for 24 hr with naïve or SEE (1 µg/ml) pulsed Raji. Data are mean ± SEM of 15–20 biological replicates in cells from four independent experiments.

Article Snippet: For protein detection either on western blot or immunofluorescence, we used; NFATc1 (clone 7A6, MABS409, Sigma), TCR alpha/beta- PE (12- 9986- 42, eBioscience), AntiCholera Toxin, B- Subunit (227040, Sigma), Myc- Tag (9B11) (2276, Cell- Signalling), gamma Tubulin (4D11) (MA1- 850, Thermofisher), ANTI- FLAG M2 (F1804, Sigma), anti- ORAI1 (600–401- DG9, rockland immunochemicals Inc), anti- GFP (SAB4301138, Sigma), anti- mouse- HRP, and rabbit- HRP (1706516 and 172101, Bio- Rad (USA).

Techniques: Co-Culture Assay, Activation Assay, Luciferase